Mechanical Performance Analysis of the Main Tower of Large-span Annular Extradosed Cable-stayed Bridge
This paper takes the main tower of the large-span annular extradosed cable-stayed bridge as the research object.The static and time-history analysis was carried out by using the large finite element program Midas.The spatial stress of anchorage zone of the cable and the steel-concrete joint section of the lower pier was analyzed by extracting the most unfavorable internal forces in the beam-column model.The results show that:1)the strength and stability of the tower meet the specifications under static and seismic conditions;2)The stress state of the cable tower anchorage zone and the steel-concrete joint section is normal,and the structural detail treatment is reasonable.
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